Road-building machine



Sept. 1928.

H. F. THOMPSON ROAD BUILDING MACHINE Fi March 1927 2 Sheets-Sheet ATTRNEY ,W. H. F. THUMPSON ROAD BuILbING MACHINE Fil March 1.927 2 Sheets-Sheet 2 ATTORN.

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lamination m Illtarch a, ma. sell-1&1 nofiirarsa invention rel ates to a road machine, and has for itsohject Lthe lorovision of a device Which is adapted to, to move a predetermined depth ot the road in such a mannenthat a substantially fla surface will he had for the application of other coatings l it further ohjeetgof the. invention is the provision of a rnachine adapted to he operated n the steel forms ordinarily en ployecl in the construction of roads for pro clucing a fine grading and in vvhieh the surfaceof the roaclhed after the usual coarse gg'ratling by power shovel is planed. q

A further object ot the invention is; the

provision ofa deviceionproclhcing afine giracli 11g or planing); otta roaqlherlpreliininary toits treatment with surfacecoatings and in which the planing or grading element movable, transversely of the roaclhecl hile the device itself is movablelongitudin any on the epsio st l te s or ri s hr t e a rs n constructing a i e idbi h the-eradvvhich .have heen lQljllQYQd (liseharge'cllupon either si cle o t the roaclherl-tor lin'g up the spaces exteriorl'y of the steel mi 3 3; h. 'lihis invention will loe hest iurlolerstoocl 'lfronra consideration of the-followingcletailetl description in; "View v olt accompanying h'awihgsjsforming a part of the specification; nevertheless it is to he understood that the invention is not confined to the disclosure, being susceptible ct such changes? and moclifications Which shall define immaterial clepart ure from the salientlieatures of the invention as ex- "hressetl in the zlppfil'lded claims.

a ost i d aw gs; t, Figure 1L isa side viejw in elevation of the .clevice veonstrueteol in accorclance with the prihci-plesot iny inv-ention A illigl'ufe 2 is alplan View of thesarne, he

Figure 3 is a verticallongitudinal section. antl Y lfipgure 4 is anfenchviewiq'f the planer. 2

Referring to thedrawings, l0 ,clesiggnates "a pair of steel rails which form a part ot the usual entrineers} construction" in building; roadsan'rl for (leterrnining the longitudinal edges of the roadhecl Whenthej concrete or Oilllfi? plastic mate ials areemnlovecl in the construction. In the first instancje a heavy power grading machine is employed "for removing; the upper snrfa'ce' or crust and it is Ehecessary, alter this operation to remove. a

portion ol the reaclhed to a certain depth for the application ofthe various surfacing coats. 'l his removal is usually accomplished by inanui l labor, niakingthe production of a road expensive. The cleviceforining the subject n a tter ot the present invention is adapted to move over that portion fofthe roaclhecl, designated hy the numeral 11, in a rapid and economicalnianner, t

.The device consists essentially of -.a frame which includes generally afpa ir of l: beams l2wancl ,such transverse bars as maybe re.- quirecl toproviclegfor a. j rl trarne and tor supper-ti n th e vari ous eleinen tsforl normally removing the soil M ter operatingtheplaner or gracling clevice. h pair. at transverse bars 1-3 anrl lt are secured to the longitudinal ll l')ea1 n .s.,12 respectively, by means of plates .lh'ancl 16. A second pair ot spaced "hars fiend-l8 are secured to the longitudinal he-a1ns 12.

Axles 21. and 22 are respectivelycarried in hearings 23 carriedh the uncleritace ot. the heinnslQ ant l on which. arero'tatahlv n ountcgl respectively pairs ol ivhee s .24; and 25. W heels 24. are rigirll connected .to axle 21 as shown at 26. alt Q'Lis niounted panallel relation vvith respectto the aXle ZI and providerlwith, a. goal-.28 in mesh with .a gear 29. 1% pgid withtl' e aigle 21 the other. enc ot a shaft 27"is1nounted asnrocket 3O driven hy achain which turn is dniven by a sprocket 32 on a shaft 33; This shaftis caused to he revolved hv means or a pair of inter hing; gears 34- anrl 35 the gear 34: being 141 with a square portion 36 of theshaft While q'ear is ri with a shaft 37. Q The shaft 37 is, mounted; in fa hearing, at the onte'cncl ot' ahracket-I'EE) secured to a stanclard Q10 rising from one of the longitnclin al lt-hearns 12. It bracket 41 secured to the standard is provided ith a hearing in vvhich is monntecl the shaft 38 atoneend. second ,stan darclftZ carries a hraclzet 43 havinga hearing 44lonthe shatt33t L i v u i h v A geartli rigid with. shatt 37ois, in mesh with a gear 4L6 rigid with, sh aft; 4:7. This shaft eril'entls longitudinally ot the frame and to one side ot' the traineand is mounted in hearingsitormed at the ends of brackets 4-8. tl-ne bracket riog rllv secured to one end of the beam 17 While the second bracket is rigidly secured to one end of the beam A gear 49 on one encl ot the shaft l'Zineshes With age-a1 5 0 rin icl with a shaft The shaft. 5] is directly driven hyan engine 52 carried by the transverse ll-heams 13 and 14:.

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llll) lllO As shown more particularly in Figs. 1 and 2 a pair of standards are carried by the I-beams 12 while the other Ibeam likewise carries a pair of standards 42. These beams are connected together at their upper ends, as shown at 53, and are braced by diagonally disposed bars 54 extending from the upper end of the standards and secured at their lower ends to the I-beams 12. A bracket 55 is secured to each brace bar 54 to which is connected an I-beam 56 running transversely of the frame and disposed in the plane which is at an angle to the vertical. A carriage 57 is provided with a roller 58 engaging one face of the beam 56 while a roller 59 engages the opposite face The flanges atthe upper end of the beam provide means for maintaining the carriage in operative relation with said beam. This carriage is movable transversely of the frame and longitudinally of the I-beam 56. The carriage is provided with a hook 60 adapted to receive one end. of a chain 61. The, other end of the chain is secured to the lower end. as shown at 62, to an elevator. generally designated by the numeral 63. The

. lower. end of the elevator is thus supported by the chain 61. This elevator consists of a pair of bars 64 and 65 connectedtogether at their opposite ends and having a sprocket 66 rotatably mounted on an axle 67 carried by the'lower end of the space bars 64 and 65. The upper end of the elevator is pro vided with a sprocket 67 having a sliding connection with the squared portion 36 of the shaft 33 and is caused. to be revolved by the rotation of said shaft. "A chain 68 is trained on the sprockets 66 and 67 and is provided with a plurality of buckets 69 carried by the various links of the chain.

A cable 70 is connected at 71 to a bar 65 and is trained over a pulley 72 carried in a bracket which is connected to a brace bar 54. This cable is further trained over a pulley 73 and is connected with a drum 74 having a shaft 75 rotatablv mounted in a bearing 76 on the beam 18. A crank 77 is connected with the shaft to cause rotation of said shaft and I drum. A second cable 78 is connected at 79 to a beam 64 at the oppostie side of the elevator 63 and trained over a pulley 80. carried by a bracket 81 which is mounted on a brace rod 54. -This cable, like the cable 70, is also similarly trained over a pulley 82 and has its opposite end rigidly secured to the drum 74 but coiled on the drumrin a manner which is opposite to the coiling of the cable 70 on the drum so that rotation of the drum will. cause unwinding of the cable 70 and winding of the cable 78and vice versa.

Located adjacent the uppermost end of the elevator 63 is a traveling carrier 85 in the 7 form of belt mounted on drums 86 and 87.

The drum 87:.is ri id with a shaft 92 and is drlventhereby. The drum 86 is idle and the outer projecting end of brackets 89 which are secured to the I-beams 17 and 18. It will be noted that a pair of brackets 87 are located upon opposite sides of the drum 87. Adjacent the innermost bracket 87 is a transmission mechanism 90 having a shifting lever 91 which is adapted to shift the gears in the transmission 90 for causing a reversal of the shaft 92 so that the direction of movement of the belt 85 is reversed. In this manner the belt may be moved to the right or to the left depending upon the condition of the roadbed and whether it is desired to deposit the materials raised by the elevator at the right or left side of the roadbed. B means of the transmission 90 it will be seen that the shaft 92 may be connected with the shaft 47 for either right or left hand movement of the belt 85.

' A hood 93 is secured to the spaced beams 64 and 65 by means of brackets and is so positioned relative to the upper end of the elevator 63 that the materials which are raised by the elevator are deposited directly upon the belt 85. A plate 94 connected by means of brackets 95 to the standards 40 and 42 is adapted to aid in directing the materials onto the belt 85.

The operation of my device is as follows: It is usual in the construction of roadbeds to place a pair of steel rails in parallel relation on opposite sides of the roadbcd in order to more readily maintain the plastic materials which form the center of the roadbed in position. It is also usual to use a power shovel for removing the top surface of the roadbed preliminarily to the application of the ocment or asphalt or macadam. However, after the power shovel has been employed it is necessary to remove a predetermined depth of the materials manually. With the present device the manual removal of the materials is eliminated. The wheels 24 and 25 are placed upon the rails 10 and held in a stationary manner. v The inner end of the elevator 63 is then lowered until the buckets 69 will penetrate a suflicient depth for the removal of the materials. At this time machine will be moved forwardly along steel forms any distance requiredthen elevator will be raised enough to clear grade machine has covered. Machine will then be reversed upon steel forms and moved rearward to the place where started then crank 77 will be turned moving elevatortransversely about the width of the elevator then elevator will be lowered to therequired depth and machine moved forwardly again etc. etc. until grade is completed for that section of steel forms then operating will be carried forwardly on the next section. of grade to be graded.

Then it is desired to move the device forwardly or rearwardly the gears (not shown) of a transmisslon 101 are moved in a well mounted on a shaft 88 carried in bearings at knownn anner for connecting or disconnecting the shafts 27 and 27 or for causing a direct drive of the shaft 27 or reverse rotation of said shaft, depending upon whether the device is to be moved forwardly or rearwardly. The shaft 27 is driven through the chain 31 which in turn is driven by a sprocket 32. A sprocket 30 driven by the chain 31 drives the shaft 27*.

I claim 1. A device of the character described comprising an open frame, wheels for supporting the frame, a shaft rotatably mounted on the frame, an elevator supported within the open frame and including a bucket equipped chain, a sprocket slidably mounted on the shaft and driven thereby at the upper end of the elevator, the lower end of the elevator projecting through the bottom of the open frame, bars connected to the'frame at the sides thereof and located at an angle to the horizontal, an I beam secured to the bars and located in a plane at an angle to the vertical, a carriage embracing opposite faces of the I beam and mounted for longitudinal movement on said beam, a chain connecting the carriage with the lower end of the elevator, and providing means for adjusting the said lower end in various horizontal positions.

2. A device of the character described comprising an open frame, wheels for supporting the frame, a shaft rotatably mounted on the frame, an elevator supported Within the open frame and including a bucket equipped chain, a sprocket slidably mounted on the shaft and driven thereby at the upper end of the elevator, the lower end of the elevator projecting through the bottom of the open frame, bars connected to the frame at the sides thereof and located at an angle to the horizontal. an if beam secured to the bars and located in a plane at an angle to the vertical, a car- .riage embracing opposite faces of the l beam and mounted for longitudinal movement on said beam, a chain connecting the carriage with the lower end of the elevator, and providing means for adjusting the said lower end in various horizontal positions, standards for supporting the upper end of the elevator secured to the frame, a hood curved over the top of the elevator, a platform secured to the standards and inclined downwardly along the hood, a traveling carrier disposed transversely of the frame, the free end of the platform being located directly over the elevator.

HARRY F. THOMPSON. 

